000 00330nam a2200145Ia 4500
008 160921s9999 xx 000 0 und d
020 _a81-7808-442-2
082 _a674
100 _aWILLIAM STALLINGS
245 _aDATA AND COMPUTER COMMUNICATIONS
250 _a6TH
260 _bPEARSON
_c2002
300 _a810
942 _cBK
999 _c33043
_d33043